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How to identify what the real eye lamp?
- Fourth, a good LED desk lamp and pervious to light membrane and filter membrane, usually is pervious to light membrane in order to make the LED light is more soft, and filter membrane is effective for us to filter out the harmful light ingredients, so as to achieve the health requirements. x0dLED source volume is more small, so the shape of the LED products more beautiful. LED color more rich, as long as a little combination, can change several tens of different colors.s
Need to solve the problem of the LED light flashing
- Confirm your 12 v charger ac components have? Using the multimeter, exchange files have measure ac voltage, and you want to confirm what you said is the lamp bead board was flashing (that is specialized flashing LED lights with IC control board).s
LED desk lamp, very bright, when buy later with more and more dark
- May be there is a LED lamp bead the leakage fault happens, the first thought that all leds are connected in parallel, and then string a current limiting resistor, so if there is a leakage, the overall current will increase, lead to partial pressure increases, resistor LED voltage drop, when the LED thoroughly after short circuit, all the LED all the electricity, so there is no light. Although the LED life is very long, but in fact, the life of the LED and no imagination in so long, especially high brightness tube, electrostatic breakdown them easily.s
LED rechargeable desk lamp the internal rechargeable battery, charging voltage is how old?
- Rechargeable led desk lamp voltage specifications have two ways of blunt electricity ah. If is plugged into the USB charging cable is 5 v. Battery voltage is 5 v. The product brand of # charging desk lamp is such specification.s
Elementary school students with what kind of table lamp is the best? The LED lamp?
- From the perspective of the characteristics of the LED light source which has: no stroboscopic (traditional lamps and lanterns is constantly flickering just frequency are thought not to come out, this is a big damage for eyes) with the effect of eye protection, no pollution, long life, environmental protection, etc.; So it is recommended to use the LED desk lamp, but pay more attention when the choice, now LED market is chaotic quality time not neat, so when the choice is to pay more attention to the strength of LED desk lamp seller to ensure his quality and after-sale, 2 it is to see the buyer on his evaluation, 3 it is to see a few with power LED lamp price, the price is too low, not to buy. The hope can help yous
Non rechargeable LED lamps have a stroboscopic?
- Normal LED desk lamp not stroboscopic, this is decided by are rechargeable LED desk lamp power supply. 1, the common battery power, the power supply itself is no stroboscopic characteristics, driven by its leds stroboscopic may not happen. 2, use UBS power, UBS power is through the conversion of switch power supply dc voltage source, the voltage fluctuation is small, could not have caused the LED strobe. 3, using a dedicated dc power supply, its form has two kinds of current source and voltage source, are generally not switching power supply, stability is very good also, normally not stroboscopic. If it is found that the LED light stroboscopic explained the power supply circuit and fault, such as open circuit, LED lamp trouble light filtering capacitance.s
Of tubes is said to be good, and some say good leds, which is really good
- Tell you a data, under 30 cm of height, the desk lamp of illumination can reach 1180 lux this data is the most the desk lamp that shield an eye, fluorescent lamp or LED. Also have no who is the eyes of the lamp to read a book, so the LED light dazzling is not a problems
LED lamp circuit of current more conference appear what problem
- Large current and more way to reduce the current. Of the main parameters affecting the service life of the LED is current and temperature, electric current, the greater the corresponding calorific value was greater, so the LED driver must reasonable control current, the other current large whole lamp of photosynthetic efficiency is low.s
Why is outdoor commecial lighting important
- Reduced power consumption than conventional lighting.Typical light output for a 60w light bulb is 800 lumens:equivalent light output for an LED light is around 9w ,which equates to...
Have you ever used of exterior led flood lights
- Waterproof LED Flood Light is very popular among consumers now. It can be different in sizes, styles, colors, prices, and so forth. Compared with traditional incandescent light, it...
What's emergency light bar
- External inductor lamps are basically fully sealed fluorescent lamps (no electrode entries) with electromagnets. The induction coil (inductor) produces a very strong magnetic field...
How does traffic light sensors work
- How does traffic light sensors work? This must be a question that has been ignored by people who drive to work everyday, because it is too familiar to trigger your curiosity. Nowad...
Why is police strobe lights important
- Newest police car siren, vehicle siren, electronic siren,used for police car, cop car, fire fighting, ambulance EMS, wrecker, project car, sprinkler, patrol car, emergency vehicle,...